/* ==========================================================================
   Andrés y Crespo Arquitectos — sistema de diseño
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Inter:wght@400;500;600&display=swap');

:root{
  --ink:        #1c1b1a;
  --ink-soft:    #3a3733;
  --muted:      #6f6a63;
  --paper:      #faf8f5;
  --paper-dim:  #f1ede6;
  --stone:      #e7e0d5;
  --stone-line: #ddd5c7;
  --accent:     #a1512e;
  --accent-dark:#7e3f23;
  --white:      #ffffff;

  --font-head: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1180px;
  --gap: 1.5rem;
  --radius: 2px;
}

*, *::before, *::after{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink-soft);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img{ max-width: 100%; display: block; }

a{ color: inherit; text-decoration: none; }

h1, h2, h3, h4{
  font-family: var(--font-head);
  color: var(--ink);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 0.6em;
}

h1{ font-size: clamp(2.2rem, 4vw, 3.4rem); font-weight: 400; }
h2{ font-size: clamp(1.6rem, 2.6vw, 2.2rem); }
h3{ font-size: 1.3rem; }

p{ margin: 0 0 1em; }

.eyebrow{
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.9em;
}

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section{ padding: 5rem 0; }
.section--tight{ padding: 3rem 0; }
.section--stone{ background: var(--stone); }
.section--ink{ background: var(--ink); color: var(--paper-dim); }
.section--ink h2, .section--ink h3{ color: var(--paper); }

.section-head{
  max-width: 640px;
  margin-bottom: 3rem;
}
.section-head.center{ margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.85em 1.7em;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn--primary{ background: var(--accent); color: var(--white); }
.btn--primary:hover{ background: var(--accent-dark); }
.btn--outline{ border-color: currentColor; }
.btn--outline:hover{ background: var(--ink); color: var(--white); border-color: var(--ink); }
.section--ink .btn--outline{ border-color: var(--paper-dim); }
.section--ink .btn--outline:hover{ background: var(--paper); color: var(--ink); }

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--stone-line);
}
.site-header .container{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.brand{
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-head);
  font-size: 1.15rem;
  color: var(--ink);
}
.brand img{ height: 40px; width: auto; }
.brand small{
  display: block;
  font-family: var(--font-body);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.nav-toggle{
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span{
  display: block;
  height: 2px;
  background: var(--ink);
}

.main-nav{
  display: flex;
  align-items: center;
  gap: 2.1rem;
}
.main-nav > ul{
  display: flex;
  align-items: center;
  gap: 2.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a{
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  padding: 0.4em 0;
  position: relative;
}
.main-nav a:hover, .main-nav a.is-active{ color: var(--accent); }

.has-dropdown{ position: relative; }
.dropdown{
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background: var(--white);
  border: 1px solid var(--stone-line);
  box-shadow: 0 12px 30px rgba(28,27,26,0.08);
  padding: 0.6rem 0;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: all 0.18s ease;
}
.has-dropdown:hover .dropdown{
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dropdown a{
  display: block;
  padding: 0.55em 1.4em;
  font-size: 0.85rem;
  white-space: normal;
}
.dropdown a:hover{ background: var(--paper-dim); }
.dropdown .dropdown-sub{
  padding-left: 2.3em;
  font-size: 0.8rem;
  color: var(--muted);
}

.nav-cta{
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  border: 1px solid var(--ink);
  padding: 0.6em 1.2em;
  white-space: nowrap;
}
.nav-cta:hover{ background: var(--ink); color: var(--white); }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: flex-end;
  background-size: cover;
  background-position: center;
  color: var(--white);
}
.hero::before{
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(28,27,26,0.15) 0%, rgba(28,27,26,0.75) 100%);
}
.hero .container{ position: relative; padding-bottom: 4.5rem; }
.hero .eyebrow{ color: var(--stone); }
.hero h1{ color: var(--white); max-width: 760px; }
.hero p{ max-width: 520px; color: var(--paper-dim); font-size: 1.05rem; }

.page-hero{
  background: var(--ink);
  color: var(--white);
  padding: 6.5rem 0 3.5rem;
}
.page-hero h1{ color: var(--white); margin-bottom: 0.3em; }
.page-hero .eyebrow{ color: var(--stone); }
.breadcrumb{
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 1.2rem;
}
.breadcrumb a:hover{ color: var(--accent); }
.section--ink .breadcrumb, .page-hero .breadcrumb{ color: #b7b1a8; }

/* ---------- Grids & cards ---------- */
.grid{
  display: grid;
  gap: var(--gap);
}
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }

.card{
  background: var(--white);
  border: 1px solid var(--stone-line);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.card:hover{ transform: translateY(-4px); box-shadow: 0 16px 32px rgba(28,27,26,0.08); }
.card__img{ aspect-ratio: 4/3; overflow: hidden; background: var(--stone); }
.card__img img{ width: 100%; height: 100%; object-fit: cover; }
.card__body{ padding: 1.4rem; flex: 1; display: flex; flex-direction: column; }
.card__body h3{ font-size: 1.05rem; margin-bottom: 0.4em; }
.card__body p{ font-size: 0.9rem; color: var(--muted); flex: 1; }
.card__tag{
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.6em;
}
.card__link{
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  margin-top: 0.8em;
}
.card:hover .card__link{ color: var(--accent); }

.service-row{
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 1.1rem;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--stone-line);
}
.service-row__num{
  font-family: var(--font-head);
  color: var(--accent);
  font-size: 1.1rem;
}
.service-row h3{ margin-bottom: 0.3em; }
.service-row p{ color: var(--muted); margin-bottom: 0.6em; font-size: 0.95rem; }

/* ---------- Split / about ---------- */
.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}
.split img{ width: 100%; height: 100%; object-fit: cover; }

.stat-row{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2.5rem;
}
.stat-row strong{
  display: block;
  font-family: var(--font-head);
  font-size: 2.1rem;
  color: var(--accent);
  font-weight: 500;
}
.stat-row span{ font-size: 0.85rem; color: var(--muted); }

/* ---------- Gallery ---------- */
.gallery{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}
.gallery a{ display: block; aspect-ratio: 4/3; overflow: hidden; background: var(--stone); }
.gallery img{ width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.gallery a:hover img{ transform: scale(1.05); }
.gallery .span-2{ grid-column: span 2; aspect-ratio: unset; }

/* ---------- Forms ---------- */
.form-grid{
  display: grid;
  gap: 1.2rem;
}
label{
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5em;
}
input, textarea{
  width: 100%;
  padding: 0.85em 1em;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--stone-line);
  background: var(--white);
  color: var(--ink);
  border-radius: var(--radius);
}
input:focus, textarea:focus{ outline: none; border-color: var(--accent); }
textarea{ min-height: 140px; resize: vertical; }

.contact-info{ list-style: none; margin: 0; padding: 0; }
.contact-info li{
  padding: 1rem 0;
  border-bottom: 1px solid var(--stone-line);
  font-size: 0.95rem;
}
.contact-info li:hover{ color: var(--accent); }
.contact-info span{
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.3em;
}

.form-note{
  font-size: 0.85rem;
  padding: 1rem 1.2rem;
  background: var(--paper-dim);
  border-left: 3px solid var(--accent);
  margin-top: 1.2rem;
}

/* ---------- Footer ---------- */
.site-footer{
  background: var(--ink);
  color: #cfc9c0;
  padding: 4rem 0 2rem;
}
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid #35322d;
}
.footer-grid h4{
  color: var(--paper);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-body);
  font-weight: 600;
  margin-bottom: 1.1em;
}
.footer-brand img{ height: 34px; margin-bottom: 1em; filter: invert(1) brightness(1.6); }
.footer-brand p{ font-size: 0.88rem; color: #a39c91; max-width: 320px; }
.footer-links{ list-style: none; margin: 0; padding: 0; }
.footer-links li{ margin-bottom: 0.7em; font-size: 0.88rem; }
.footer-links a:hover{ color: var(--white); }
.footer-bottom{
  display: flex;
  justify-content: space-between;
  padding-top: 1.6rem;
  font-size: 0.78rem;
  color: #8b8479;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- Utilities ---------- */
.mt-0{ margin-top: 0; }
.text-muted{ color: var(--muted); }
.list-check{ list-style: none; margin: 0 0 1.5em; padding: 0; }
.list-check li{
  position: relative;
  padding-left: 1.6em;
  margin-bottom: 0.7em;
  font-size: 0.96rem;
}
.list-check li::before{
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 8px; height: 8px;
  background: var(--accent);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .grid-3{ grid-template-columns: repeat(2, 1fr); }
  .grid-4{ grid-template-columns: repeat(2, 1fr); }
  .split{ grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .footer-brand{ grid-column: span 2; }
}

@media (max-width: 720px){
  .nav-toggle{ display: flex; }
  .main-nav{
    position: fixed;
    inset: 84px 0 0 0;
    background: var(--paper);
    flex-direction: column;
    align-items: stretch;
    padding: 1.5rem;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }
  .main-nav.is-open{ transform: translateX(0); }
  .main-nav > ul{
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .main-nav > ul > li{ border-bottom: 1px solid var(--stone-line); }
  .main-nav a{ padding: 0.9em 0; display: block; }
  .dropdown{
    position: static;
    opacity: 1; visibility: visible; transform: none;
    box-shadow: none;
    border: none;
    display: none;
    padding-left: 0.5rem;
  }
  .has-dropdown.is-open .dropdown{ display: block; }
  .nav-cta{ margin-top: 1rem; text-align: center; }

  .grid-2, .grid-3, .grid-4{ grid-template-columns: 1fr; }
  .gallery{ grid-template-columns: repeat(2, 1fr); }
  .stat-row{ grid-template-columns: 1fr; gap: 1.2rem; text-align: left; }
  .footer-grid{ grid-template-columns: 1fr; }
  .footer-brand{ grid-column: span 1; }
  .hero{ min-height: 72vh; }
  .section{ padding: 3.2rem 0; }
}